CAJ | 학술논문

摘要：吸附是一种极具应用前景的汽油深度脱硫分离技术。采用硝酸氧化、焙烧、负载金属等方法对活性炭进行改性，利用静态实验研究了改性活性炭对模拟汽油中噻吩的吸附脱除性能。结果表明硝酸氧化可以增加活性炭表面酸性基团的量，提高脱硫性能；N2气氛下焙烧后吸附剂脱硫效果明显优于未，彼理活性炭；活性炭表面负载Fe、Zn、Cu、Ni金属离子改性中，Fe离子改性活性炭脱硫效果最好。根据上述实验结果，进行了活性炭复合改性实验，得出68％硝酸氧化后再进行Fe离子负载，吸附剂脱硫率最高，噻吩的脱硫率可达到85％。
적요：흡부시일충겁구응용전경적기유심도탈류분리기술。채용초산양화、배소、부재금속등방법대활성탄진행개성，이용정태실험연구료개성활성탄대모의기유중새분적흡부탈제성능。결과표명초산양화가이증가활성탄표면산성기단적량，제고탈류성능；N2기분하배소후흡부제탈류효과명현우우미，피리활성탄；활성탄표면부재Fe、Zn、Cu、Ni금속리자개성중，Fe리자개성활성탄탈류효과최호。근거상술실험결과，진행료활성탄복합개성실험，득출68％초산양화후재진행Fe리자부재，흡부제탈류솔최고，새분적탈류솔가체도85％。
Adsorption is one of the most promising methods in deep desulfurization of gasoline. The activated carbon was modified by HNO3 oxidation, calcinations and loading with metallic ions. the desulfurization performance of the activated carbons was evaluated by adsorptive removal of thiophene from thiophene-cyclohexane binary solution with equilibrium adsorption capacity as the criterion for evaluation. The experimental results show that the surface acidity groups of activated carbon increase considerably bv HNO3 treatment and imoroveits desulfurization performance; The desulfurization rate of modified activated carbon increased through calcina- tions under N2 atmosphere;loading of Fe,Zn,Cu, Ni ion on the activated carbon improved its adsorption of thio- phene, while modified by Fe ion gave the higher desulfurization rate than by other metal ions. Then, the effect of different modification method combination on the activated carbon are studied. The complex modification of active carbon, oxidized firstly by HNOa before loading active component, its desulfurization efficiency greatly enhanced, and then impregnated by Fe ion, gave the highest desulfurization rate, which could reach 85 %for the thiophene.